Hi,
could anybody explain how it works, when I submit a form with an a4j:commandButton?

I have following scenario:

Page with edit button which should switch between read and edit mode.

<h:form id="edu">
               
  <a4j:region id="rd" rendered="#{not profile.editMode}">
     <p><h:outputText value="#{user.name}" /></p>
  </a4j:region>

  <a4j:region id="ed" rendered="#{profile.editMode}">
     <h:outputLabel for="li" value="#{messages.name}:"/>
     <br />
        <h:inputText id="li" value="#{user.name}" required="true">
          <rich:ajaxValidator event="onblur" eventsQueue="edu" ignoreDupResponses="true"/>
     </h:inputText>
       <rich:message id="lim" for="li" />
   </a4j:region>
   <br />
    <a4j:commandButton id="edi" value="#{profile.editMode ? messages.ok : messages.edit}" 
          reRender="edu" action="#{profile.setEditMode(!profile.editMode)}"/>
</h:form>

And this is backing POJO bean:

@Name("profile")
@Scope(ScopeType.PAGE)
public class ProfileBean implements Serializable{
        @In
     UserQuery userQuery;
     
     @In 
     EntityManager entityManager;
     
     private User user;
     
     @RequestParameter
     private String username;
     
     private boolean editMode = false;
     
     @Create
     public void loadUser(){
          user = userQuery.getUser(username);
     }

        public User getUser(){
               return this.user;
        }

        public void setEditMode(boolean editMode) {
          this.editMode = editMode;          
     }
     
     public boolean isEditMode() {
          return editMode;
     }

}

Everything works well but when I'm in edit mode, hit the ok button, the changes made to user entity are not flushed to database.

I have also tried this approach:

@Begin(flushMode=FlushModeType.MANUAL)
public void switchToEditMode(){
   editMode = true;
}

@End
public void switchToReadMode(){
    entityManager.flush();
    editMode = false;
}

but it did not help.

I read documentation and understand that seam commits transaction after each request. But how it works, when there is an AJAX request?

Thanks in advance.

Michal